This circuit is from documentation from 1965. However, it can be created with modern transistors. Power comes from two 9 V batteries.
The critical components of this project from a 1978 publication are the transformers, which can be...
Found in a 90s Popular Electronics, this circuit can power a miniature railroad with voltages of 15...
August 2017 - Mouser Electronics is now offering the Diodes Incorporated AH1389 Hall Single-pole...